These silicone soda can lids are made of a premium grade silicone so that they are reusable, flexible, durable, and easy to wash. Perfect to take with you outside to cover your drink and keep things out while you arent taking a sip.The lids fit standard coke, soda, and beer cans! (Silicone Soda Can Lids Can Covers Can Caps - Can Topper Can Saver Can Stopper)Improve your outdoor experience!Shield your drinks from dust and sand getting into your can while you arent drinking.Do they lock in fizziness?Great question! They definitely help compared to a completely open soda in the short term, but it will not maintain the fizziness of a drink over several days. But for the job of covering your drink weve got you covered!Money Back Guarantee!If you arent completely satisfied with your order, simply reach out to us through the Amazon messaging service and we will respond within 24 hours to make it right even on the weekends. We absolutely guarantee your satisfaction or your money back!